This 2002 Pontiac Grand Prix had already been diagnosed with a faulty ignition switch. The faulty switch was not allowing the blower motor to operate properly.
Now on to changing the ignition switch. Disconnect the battery.
The first step is to remove the lower trim panel under the steering column. There may be some screws at the bottom of this panel that have to be removed. This car did not have any. With the bottom edge loose the panel can be slid towards the driver’s seat to disengage the retaining clips.
Now that the trim panel is out of the way. There are several 7 mm headed screws that have to be removed.
There are four 10 mm headed bolts that have to be removed that are further up in the dash and an extension will be needed.
The panel removed. Notice how far up in the dash the interior mounting edge is.
Pull the tilt lever from the steering column. For more detailed pictures of how this comes out please click here.
There are a couple of torx screws that have to be removed from the bottom cover and then it can be pulled down.
With the bottom cover removed the upper cover retaining screws can be removed. A torx socket will be needed.
The one on the outside is a two step process. First remove the screw.
Then remove the extension with a pair of pliers.
Next disconnect the gang connector near the bottom of the steering column. There is a 7 mm headed bolt in the center of the connector.
After separating the connector halves you will notice that the connector is made up of three pieces.
Using a small screwdriver spread the outer connectors away from the main body. Sorry about the blurred picture.
Slide the connector out of the main body. Repeat this step for the other side of this connector.
Next lift the upper shroud and insert a curved and pointed device as shown in the next picture.
Look closely with a light and locate the small hole in the aluminum housing above the lock cylinder.
Rotate the lock cylinder to the full crank position and then depress the retaining pin in the hole that you located earlier. Pull the lock cylinder from the housing.
This is a view of the above mentioned hole and tool with the cover removed so that you can get a better idea of its location.
This vehicle has a factory anti theft system that uses a transponder in the key. The black part that I am pointing to is the receiver antenna. Release the clips and slide it off of the housing.
Remove the screws that hold the ignition switch in place. The cream colored piece to the right with two wires attached is the key buzzer switch. To remove it use a small screwdriver to depress the locking tab, rotate it and lift off of the housing.
When removing the forward screw you will also be removing the lock cylinder shift interlock solenoid.
Finish removing the switch by cutting the wires ties that hold it to the other harnesses and install the new switch in reverse order. Make sure you secure the harnesses back together with new wire ties.
Update July 11, 2011: Well it was bound to happen, a bull in a china shop had difficulty reinstalling the lock cylinder and has now messed up his steering column. Wants to blame poor information from this site. I cannot stress enough that all of the work performed by me, on this site requires an extreme eye towards detail and a gentle touch. No part of this repair in particular should require any force or coercion of any kind!
Some extra things to keep in mind:
The new ignition switch needs to be indexed into the exact position, as the old switch was in, when it was removed. The ON position
The key tumbler assembly needs to be checked, to make sure the locking bar drops flat and evenly towards the center of the tumbler assembly when the key is installed. If it does not, DO NOT INSTALL IT!
There is a retaining bar/panel that holds the springs in place for the individual tumblers. If it is not fully installed and flat, no protrusions past the outside edge of the tumbler housing, DO NOT INSTALL IT!
These two tumbler pictures are for a similar design and not specifically for this vehicle.
This last tidbit of info requires some thought before performing. If the ignition tumbler was giving any signs of sticking or hanging up, I perform one extra step. In the slot that the locking bar rests in, take a small file and bevel the leading edge of the slot, so that a worn tumbler assembly will work without sticking. A very small amount of grease helps as well.
I have a 02 Pontiac grand prix gtp, and my problem is similar to others, but i have no power to heat or air, i have no power to seat warmer, no power to milage display. every now and then everything will turn on but the moment i try to change blower speeds, temperature, or even where it blows it shuts off, everything. Is this all caused by the ignition switch.
The replacement will be very similar to the Impala post that I did except that the entire dash bezel does not have to be removed. Just the cover for the radio and a/c controls. The radio may need to be removed from the mounting location but leave the wires connected unless you know the anti theft code. Also the hush and duct panels have to be removed from under the driver’s side of the dash. It is a little tricky getting the shift interlock cable out of the ignition switch as well. I use a long skinny screwdriver to release the locking tab. You will need to copy and paste the address into your browsers address bar.
http://www.sparkys-answers.com/2008/11/2003-chevrolet-impala-security-light.html
2002 Pontiac Grand AM – Ignition Switch is not on steering collumn, key is located on dash. Cold weather there are no accessories, AC, FAN, Instrument lights, radio – if I drive car for a while it comes on and or I have to either hold the key up a little and or jiggle the key a lot – please assist … ty so very much
Since the tumbler assembly cannot be removed unless the key is in the crank position, I would recommend getting a new key cut from the VIN. That may cure the entire tumble problem. If not it is not really any waste as a new tumble kit can be set to use and existing key. The only real problem will come in is if the key will not turn then the housing may have to be replaced as well.
I have a 02 Grand Prix, with a bad ignition switch, as my blower has only worked on speed 5 for over a year…I can live with this a while longer.
For about six months, the key would not want to come out when I shut the car off. After slamming it back into park, and moving the wheel a bit, I had been able to work with it, until
I shut the car off about 3 weeks ago. Now the only key I have (which is worn) wont even turn…it’s like it is locked in the off position…HELP! I attempted spraying a lubricant into the key hole with no luck at all. I don’t know if I simply need to get a new key from the dealer, or am I wasting my money doing that first when I may need to replace the entire tumbler…what is your advice on where to start?